I do realise no one can give me an exact answer but we have an autosleeper symbol , so a single battery and no solar panels nor a generator. We would like to go to a rally and we have no idea how long our battery would last. If we just used it to turn pump on when we used loo, and for a quick shower each(2 of us) and the lights just for a few minutes at night whilst we put bed up would it be likely to last 3 or 4 nights assuming its not a duff battery. We would not use tv, electronic chargers , kettle or hairdryer of course. If it went flat and we put engine on, how long would we need to run it to replenish it? Weve had 2 holidays and a few weekends but always on ehu and I presume its best not to let it go completely flat. Thanks for any advice and Ive put on my thick skin ready for the cheeky comments.